72615118907 has 2 divisors, whose sum is σ = 72615118908. Its totient is φ = 72615118906.

The previous prime is 72615118889. The next prime is 72615118931. The reversal of 72615118907 is 70981151627.

It is a weak prime.

It is an emirp because it is prime and its reverse (70981151627) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72615118907 is a prime.

It is not a weakly prime, because it can be changed into another prime (72615118307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36307559453 + 36307559454.

It is an arithmetic number, because the mean of its divisors is an integer number (36307559454).

Almost surely, 2^72615118907 is an apocalyptic number.

72615118907 is a deficient number, since it is larger than the sum of its proper divisors (1).

72615118907 is an equidigital number, since it uses as much as digits as its factorization.

72615118907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 47.

The spelling of 72615118907 in words is "seventy-two billion, six hundred fifteen million, one hundred eighteen thousand, nine hundred seven".